Cloth take-up mechanism for looms



June 28, 1932. v. LINDSJO ,8

CLOTH TAKE-UP MECHANISM FOR LOOMS q Filed May 25, 1931 2 Sheets-Sheet 1 I ATTORN EY June 28, v, UNDSJQ 1,865,1-

- CLOTH TAKE- UP MECHANISM FOR LOOKS Filed may 25, 1951 2 Sheets-Sheet 2 Y M 2 41 INVENTQR J a 31 Y ATTORNEY Patented June 28, 1932 UNITED STATES PATENT OFFICE VERNER LINDSJO, 0F HOPEDALE, MASSACHUSETTS, ASSIGNOR T0 DRAPER CORPORA- TION, 0F HOPEDALE, MASSACHUSETTS, A CORPORATIOLTOF MAINE CLOTH TAKE-U1 MECHANISM FOR LOOMS Application filed May 25, 1931. Serial No. 539,742.

This invention relates to looms and is more particularly directed to the take up mechanism.

It is now the general practice to provide looms with a take up mechanism for taking up the cloth as it is woven and to wind the cloth upon a cloth roll. Many varieties of take up mechanisms have been developed and means have been suggested whereby when the take up roll has been supplied with a length of cloth it may be removed from the loom and replaced by an empty cloth roll. The facility with which the full cloth roll may be removed andthe empty cloth roll put in place constitute an important factor in any take up mechanism.

One of the objects of the present invention is to provide a take up mechanism for looms wherein the cloth roll may be driven by a driving member engaged with one end thereof and the other end of the roll may be supported in such manner that the full cloth roll may be readily disengaged from its supporting and driving means and replaced by an empty cloth roll.

More specifically stated the invention contemplates a driving member adapted for positive connection with one end of a cloth roll and a support for the opposite end of the roll comprising a plunger, which is constantly under the stress of a spring tending to move the plunger toward the driving member, and yet permit ready endwise movement of the roll and compression of the spring to thereby disengage the cloth roll from its driving and supporting members and when the plunger has been moved longitudinally a latch serves to hold the plunger in its retracted position in opposition to the stress of the spring.

The invention and novel features thereof will best be made clear from the following description and accompanying drawings of one good form thereof.

In the drawings Fig. 1 is a perspective view of a take up mechanism for looms containing the present invention; 7

Fig. 2 is a fore-and aft section through the loom showing the relation of parts;

Fig. 3 is a front elevation with parts in section and others broken away showing the cloth roll mounting, the cloth roll in this instance being shown as having been moved longitudinally to disengage the roll from its supports; and

Fig. 4e is a perspective view of a block or bearing that may be employed for holding the pressure roll against the take up or sand roll.

The loom frame 1 may be of usual construction and mounted between the side frames of the loom for rotative movement is a take up or sand roll 2 which in the present instance of the invention is mounted upon a shaft 3, supported by the loom frame.

The take up or sand roll 2 in the present instance of the invention is positively driven to exert a pull upon the cloth and take up the cloth as it is woven." As shown, the sand roll 2 is driven by a train of gearing from the ratchet wheel 5, which is actuated from a going part of the loom by a take up pawl 6, and secured to the ratchet wheel 5 is a toothed wheel 7 which meshes with a gear 8 and through the pinion 9 and gear 4 connected to the sand roll imparts a slow rotative movement thereto.

In order that the take up or sand r0112 may act positively upon the cloth it is desirable that the cloth be held firmly in surface contact with the take up or sand roll. To this end there is a pressure roll 10, the end portions or journals of which are mounted in a block 11, Fig. 4, having an opening 12 to receive the journals of the pressure roll. The block 11, one at each side of the loom, is supported in a bracket 13 and one side portion of the block 11 rests upon an inclined seat 1 1. the result being that the pressure roll 10 will, under the influence of gravity, normally rest upon the cloth passing between the sand roll 2 and the pressure roll 10. The relation of parts to the cloth a is clearly illus trated in Fig. 2 wherein the cloth a passes over one or more guide rolls 15, preferably mounted on the breast beam 16 and then backwardly about the take up or sand roll 2 and between the sand roll 2 and the pressure roll 10.

In order to adapt the pressure roll to the character or thickness of the fabric being woven the block 11 has the opening 12 therein formed With its axis at different distances from the faces of the block 11 so that by turning the block 11 into different positions the desired relation between the pressure roll and the sand roll may be readily secured.

In accordance with the present invention the cloth roll is turned by a driving member which positively engages one end of the cloth roll and is supported at its opposite end by a plunger which is normally under the influence of a s'pringtending to move the plunger towards the driving member.

Mounted at one side of the loom frame is a bracket 17 having a bearing 18 for the support of the driving member 19 which is pro vided with a driving head 20. The driving head 20 is of angular shape in cross section and adapted to engage a corresponding angular recess 21 in one end of the cloth roll 22 and in order that the head 20 and recess 21 in the cloth roll may be readily engaged when the cloth roll is being put in operative relation with the driving member the head 20 has ehamfered off portions 23, which serve to guide the head 20 into the recess 21 of the cloth roll.

The driving member 19 is constituted as a frictional drive and as shown in the present instance of the invention is formed by a sprocket wheel 24 loosely mounted upon the driving member 19 and. having its hub portion 25 provided with a friction member 26. Secured to the driving member 19' is the hand wheel 27 provided with a pin or engaging element 28 extending into a recess or notch in the friction member 26.

As shown in the present instance of the invention the driving member 19' receives its rotative movement from a sprocket chain 29 which passes about the sprocket wheel 24 and over another sprocket wheel 30, Fig. 1, secured for rotative movement with the take up or sand roll, the result being that during the slow rotation of the take up or sand roll 2 the driving member 19 will be driven by the sprocket chain and should it be desired at any time to rotate the cloth roll without disturbing the driving connection between the take up or sand roll and the cloth roll the hand wheel 27 may be manipulated, the slip friction between the parts as described permitting such movement.

Mounted at the opposite side of the loom frame is a bracket 31 for supporting a plunger 32. As shown in the present instance of the invention the bracket 31 is provided with two bearing members 33 in which are suitable bearings 34 for the plunger 32.

The plunger 32 is provided with a head 35 of angular shape to engage a corresponding angular opening 36 in the end of the cloth roll 22, and like the head 20 of the driving member 19 the edge portions of the head are chambered off to facilitate ready engagement of the head with the opening 36.

The plunger 32 is normally under the influence of a spring 37, one end of which bears against the outer end portion of the plunger and the other end of which rests upon a fixed part, so that the plunger is normally under the stress of the spring to move it longitudinally towards the driving member 19 or into engagement with the end cloth roll placed between. the two.

As shown in the present instance of the invention the spring 37 is supported at the outer end of the plunger by a reduced portion. 38 of the plunger and similarly the outer end of the spring 37 is supported upon a stud 39 carried by an arm 40 secured at 41 to the loom frame, the construction being such that the spring 37 acts constantly upon the plunger to move it lengthwise or longitudinally in its bearings towards the driving member 19.

The plunger 32 is provided with a shoulder 4 2 which is adapted'to be engaged by a latch to hold the plunger in retracted position and against the expansive action of the spring 37 when the plunger is moved to the postition as indicated in Fig. 3.

Extending from the bracket 31 is an arm a3 to which is pivoted at at the latch which is adapted to engage the shoulder 42 when the plunger is moved to the left, F ig. 3, against the tension of the spring 37.

As the cloth roll 22 is rotated by the driw ing member the plunger 32 and perforce the spring 37 will be rotated until when the cloth roll has been supplied with cloth to the desired extent and it is desired to remove the cloth roll with its load of cloth, the cloth roll is moved bodily in a longitudinal direction to the left, as indicated in Fig. 3, thereby compressing the spring 37 and permitting the latch 45 to drop in front of the shoulder 41-2 of the plunger and retain the plunger in retracted position against the stress of the spring. This relation of parts is clearly 1I1- d'icated in Fig. 3 where, as shown by arrow, the cloth roll. 22 has been moved to the left, thereby disengaging it from the driving member 19 and permitting the opposite end of the roll to he disengaged from the head 35 of the plunger, it being understood that the plunger will be held in retracted position, as indicated in 3, by the latch 45. When an empty roll has had one end engaged with the driving member 19 and the other end presented in axial alignment with the plunger the latch 45 is trippedor raised, whereupon the spring 37 acts to force the plunger with its head in engagement with the end of the cloth roll.

Since the plunger is continuously under the expansive action of the'spring'37 and is moved longitudinally towards the driving member 19 by the spring it is desirable that a stop he provided to prevent the plunger from being thrown longitudinally from its bearings should the latch be tripped and no cloth roll be in position for engagement by the head of the plunger. To prevent the disengagement of the plunger from its bearings, the plunger is provided with a stop member 4K6, which may be constituted as a split ring secured to the plunger at a point to the left of one of the bearings 33, as indicated in Fig. 3, the result being that should the plunger be freed from the latch when no cloth roll is presented for engagement by the plunger, the stop L6 will move into stopping relation with one of the bearing members on the bracket 31 and prevent the plunger from being thrown from its bearings.

The split ring may be conveniently secured in a circular recess of the plunger and may be removed when it is desired to withdraw the plunger from its bearings.

From the construction described it will be apparent that the present invention provides a simple yet efiective means for holding a cloth roll between its supporting members, driving it from one end of the cloth roll and yet permit ready removal of the cloth roll when it is itself moved longitudinally to the left, Fig. 3. 1

What is claimed is 1. In a take up mechanism for looms, the combination of a take up or sand roll, means for positively rotating it to take up the cloth as it is woven, a cloth roll on which the cloth is wound, a driving member adapted for positive connection with one end of the cloth roll, friction means actuated from the take up or sand roll for driving said member, and a support for the opposite end of the cloth roll comprising a plunger member, a spring normally acting upon the plunger member to move it toward and into engagement with the end ofthe cloth roll, and a latch for holding the plunger member retracted from the cloth roll against the normal action of the spring when the cloth roll is moved longitudinally to disengage it from the driving member.

2. In a take up mechanism for looms, the

' combination of a take up or sand roll, means for rotating it to take up the cloth as it is woven, a cloth roll on which the cloth is wound, a frictionally driven member adapted for positive connection with one end of the cloth roll, and a support for the opposite end of the cloth roll, comprising a plunger member, a spring normally acting upon, the plunger'member to move it towards the frictionally driven member and yieldable by longitudinal movement of the cloth roll away from the driven member in disengaging the cloth roll from the driven member, and a latch for holding the plunger member in retracted position against the normal action of the spring when the plunger member has been moved by the cloth roll to permit ready removal of the cloth roll. i r 3. In a take up mechanism for looms, the combination of a take up or sand roll, means for rotating it to take up the cloth as it is woven, a cloth roll on which the cloth is wound, a frictionally drivenmember adapted for positive connection with one end of the cloth roll, and a support for the opposite end of the cloth roll, comprising a plunger memher, a spring normally acting upon the plunger member to move it towards the frictionally driven member and yieldabl-e by longitudinal movement of the cloth roll away from the driven. member, and a latch for holding the plunger member in retracted position to which it has been moved by longitudinal movement'of the cloth roll against the normal action of the spring to permit ready removal of the cloth roll, and a stop for restricting the endwise movement of the plunger member under the stress of the spring when the plunger member is freed from the latch.

4-. In a take up. mechanism for looms, the combination of a cloth roll on which the cloth is wound as it is woven, a driving member adapted to be positively engaged with one end of the cloth roll for driving it, a support for the opposite end of the cloth roll comprising a bracket, a plunger member mounted on the bracket for longitudinal movement, a spring normally'acting on the plunger member for moving it into engagement with the adjacentend of the cloth roll and holding it in. such engagement during winding of the cloth thereon and yieldable by movement of the cloth roll longitudinally toward the plunger to permit removal of the cloth roll, and a latch for holding the plunger member \in the retracted position to which it has been moved by longitudinal movement of the cloth roll in opposition to the normal action of the spring.

5. In a. take up mechanism for looms, the combination of a cloth roll on which the cloth is wound as it is woven, a driving member adapted to be positively engagedwith one end of the cloth roll for driving'it, a support for the opposite end of the cloth roll comprising a bracket, a plunger member mounted on the bracket for longitudinal movement, a spring normally acting on the plunger member for moving it into engagement with the adjacent end of the cloth roll and holding it in such engagement during winding the cloth thereon and yielding by movement of the cloth roll longitudinally toward the plunger to permit removal of the cloth roll, and a latch for holding the plunger member in the retracted position to which it is moved by the cloth roll in opposition to the normal action of the spring and a stop mounted on the plunger for engagement with the bracket should the plunger be freed from the latch and no cloth roll is positioned for engagement by the plunger.

' 6. In a take up mechanism for looms, the combination of a cloth roll on which the cloth is wound as it is woven, a driving member adapted to be positively engaged with one end of the cloth roll for driving it, a support for the opposite end of the cloth roll comprising a bracket, a plunger member mounted on the bracket for longitudinal movement thereon, a coiled spring having one end bearing on the plunger and normally acting to move the plunger toward the driving memher, and a latch for holding the plunger retracted against the normal stress of the spring to permit removal of the cloth roll.

7. In a take up mechanism for looms, the combination of a cloth roll on which the cloth is wound as it is woven, a driving member adapted to be positively engaged with one end of the cloth roll for driving it, a support for the opposite end of the cloth roll comprising a bracket, a plunger member mounted on the bracket for longitudinal movement thereon, a coiled spring having one end bearing on the plunger and normally acting to move the plunger toward the driving member, and a latch for holding the plunger retracted against the normal stress of the spring to permit removal of the cloth roll, and a stop carried by the plunger member and adapted to engage a fixed part to prevent the normally acting spring from discharging the plunger from the bracket should the plunger be freed from the latch when a cloth roll is not positioned for engagement by the plunger.

8. In a take up mechanism for looms, the combination of a cloth roll on which the cloth is wound as it is woven, a driving member adapted to be positively connected with one end of the cloth roll for driving it, a support for the opposite end of the cloth roll comprising a plunger mounted for longitudinal movement, a coiled spring engaged with one end of the plunger and constantly acting to move the plunger longitudinally towards the driving member, and a latch for holding the plunger retracted in opposition to the splring to facilitate ready removal of the cloth r0 1.

9. In a take-up mechanism for looms, the combination of a cloth roll, a driving member adapted to be engaged with one end of the cloth roll for driving it, a support for the VERNER LIN DSJ O. 

